package com.sky.controller.user;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
 * @author wzplove
 */
@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {

        // 构造redis中的key，规则：dish_分类id
        String key = "dish_" + categoryId;
        // 查询redis中是否存在菜品缓存数据
        List<DishVO> redisData = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if (redisData != null && !redisData.isEmpty()) {
            // 如果存在，直接返回缓存数据，无需查询数据库
            return Result.success(redisData);
        }
        // 如果不存在，根据分类id查询数据库，将查询到的菜品数据缓存到redis中
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        // 查询起售中的菜品
        dish.setStatus(StatusConstant.ENABLE);
        List<DishVO> list = dishService.listWithFlavor(dish);
        // 菜品数据写入到redis中
        redisTemplate.opsForValue().set(key, list);
        return Result.success(list);
    }
}